Chapter 8: Troubleshooting

 

 

 

 

 

 

 

 

 

 

LED1

LED2

LED3

LED4

Meaning

 

 

 

 

 

On

Off

On

Off

Remote Alarm Indication (RAI). Your

 

 

 

 

ISDN provider has synchronization

 

 

 

 

problems and is reporting this problem

 

 

 

 

to you.

 

 

 

 

 

On

Off

Off

On

Your E1/PRI line does not support

 

 

 

 

CRC4 functionality. Deselect the CRC4

 

 

 

 

option. (See Setting Up ISDN Port

 

 

 

 

Properties on page 80.)

 

 

 

 

 

Off

Off

Off

Off

No electrical signal is on the E1/PRI

 

 

 

 

line. Make sure your cable is plugged in

 

 

 

 

correctly.

 

 

 

 

 

E1/PRI Interface Without CRC4

On cards with an E1/PRI interface and no CRC4 (France), the LEDs for each port function as follows:

LED

Color

Meaning when the LED is ON...

 

 

 

1

Green

Clock is synchronized.

 

 

 

2

Green

Physical layer is active.

 

 

 

3

Yellow

Your ISDN provider is sending an RAI alarm to the

 

 

board.

 

 

 

4

Red

No meaning.

 

 

 

In their operational state, the LEDs are as follows:

LED

Color State must be...

1 Green On

2 Green On

3 Yellow Off

5536 PRI RAS Communications Controller Users Guide

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